Evidence map›Paper›PMID 20345656›Full record

ArticleMolecular microbiology2010

Shear-enhanced binding of intestinal colonization factor antigen I of enterotoxigenic Escherichia coli.

Veronika Tchesnokova, Annette L McVeigh, Brian Kidd, Olga Yakovenko, Wendy E Thomas, Evgeni V Sokurenko, Stephen J Savarino

Abstract read
In one paragraph

Article in Molecular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed.

  1. Review
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  11. Review
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  13. Host attachment and fluid shear are integrated into a mechanical signal regulating virulence in Escherichia coli O157:H7.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  14. Article
  15. Regulatory T-cell vaccination independent of auto-antigen.Experimental & molecular medicine · 2014
    Review
  16. Article
  17. Article
  18. Allosteric coupling in the bacterial adhesive protein FimH.The Journal of biological chemistry · 2013
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Veronika TchesnokovaDepartment of Microbiology, University of Washington, Seattle, WA 98195-7242, USA.
Annette L McVeigh
Brian Kidd
Olga Yakovenko
Wendy E Thomas
Evgeni V Sokurenko
Stephen J Savarino

Funding

Dynamic Properties of Bacterial AdhesionsR01AI050940 · NIAID · UNIVERSITY OF WASHINGTON · PI SOKURENKO, EVGENI VENIAMINOVIC · 2002 to 2011
$4.7M
NIAID NIH HHS R01 AI050940
6 · The paper itself

Abstract

In the intestine, enterotoxigenic Escherichia coli works against peristaltic forces, adhering to the epithelium via the colonization factor antigen I (CFA/I) fimbrial adhesin CfaE. The CfaE adhesin is similar in localization and tertiary (but not primary) structure to FimH, the type 1 fimbrial adhesin of uropathogenic E. coli, which shows shear-dependent binding to epithelial receptors by an allosteric catch-bond mechanism. Thus, we speculated that CfaE is also capable of shear-enhanced binding. Indeed, bovine erythrocytes coursing over immobilized CFA/I fimbriae in flow chambers exhibited low accumulation levels and fast rolling at low shear, but an 80-fold increase in accumulation and threefold decrease in rolling velocity at elevated shear. This effect was reversible and abolished by pre-incubation of fimbriae with anti-CfaE antibody. Erythrocytes bound to whole CfaE in the same shear-enhanced manner, but to CfaE adhesin domain in a shear-inhibitable fashion. Residue replacements designed to disrupt CfaE interdomain interaction decreased the shear dependency of adhesion and increased binding under static conditions to human intestinal epithelial cells. These findings indicate that close interaction between adhesive and anchoring pilin domains of CfaE keeps the former in a low-affinity state that toggles into a high-affinity state upon separation of two domains, all consistent with an allosteric catch-bond mechanism of CfaE binding.

Indexed as

AnimalsBinding SitesCattleEnterotoxigenic Escherichia coliErythrocytesEscherichia coli ProteinsFimbriae ProteinsModels, MolecularProtein BindingProtein Structure, TertiaryVirulence Factorscolonization factor antigensEscherichia coli ProteinsFimbriae ProteinsVirulence Factors

Identifiers

PMID20345656
PMCPMC2929265

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.